Atomic Structure

• What are the charges and locations of protons, neutrons, and electrons?

  Protons: Positive, nucleus; Neutrons: Neutral, nucleus; Electrons: Negative, orbiting nucleus
• What is electron configuration?

  Arrangement of electrons in shells around the nucleus
• What is the group number in the periodic table?

  Number of electrons in the outer shell
• What is an isotope?

  Atoms of the same element with different neutrons
• What is relative atomic mass?

  Weighted average mass of an element’s isotopes
• What is valency?

  Combining power of an element
• What do dot and cross diagrams show?

  How electrons are transferred to form ions